Process for chemical stabilization of heavy metal bearing...

Details Process for chemical stabilization of heavy metal bearing... Process for chemical stabilization of heavy metal bearing...

C - Chemistry, Metallurgy

04

B

261/45

C04B 18/14 (2006.01) B09B 3/00 (2006.01)

Patent

CA 2016152

A calcium-alumino-silicate composition comprising the reaction product of electric arc furnace dust and/or an aqueous chemical waste sludge including a source of ferrous ions and selective additive materials, the additive materials are selected so that the total composition of the additive ingredients and said sludge includes fly ash, electric arc furnace dust, lime kiln dust, ferrous sulfate, hydrated lime to provide an alkalinity of about 9 to 9.5% and water, the composition contains at least 0.2% by weight of ferrous ions and is hardenable through chemical reactions, the product of which includes calcium-alumino-silicates.

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